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- added support for template files (copy ntfs extended attributes) to CreateFile()
- mask out file flags from dwFlagsAndAttributes before passing them to NtCreateFile as file attributes svn path=/trunk/; revision=14231
This commit is contained in:
Thomas Bluemel
parent
b4d371d7d2
commit
0f4cfdb301
1 changed files with 119 additions and 52 deletions
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@ -70,20 +70,14 @@ HANDLE STDCALL CreateFileW (LPCWSTR lpFileName,
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UNICODE_STRING NtPathU;
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HANDLE FileHandle;
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NTSTATUS Status;
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ULONG Flags = 0;
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ULONG FileAttributes, Flags = 0;
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CSRSS_API_REQUEST Request;
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CSRSS_API_REPLY Reply;
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PVOID EaBuffer = NULL;
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ULONG EaLength = 0;
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DPRINT("CreateFileW(lpFileName %S)\n",lpFileName);
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if(hTemplateFile != NULL && hTemplateFile != INVALID_HANDLE_VALUE)
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{
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/* FIXME */
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DPRINT1("Template file feature not supported yet\n");
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SetLastError(ERROR_NOT_SUPPORTED);
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return INVALID_HANDLE_VALUE;
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}
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/* validate & translate the creation disposition */
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switch (dwCreationDisposition)
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{
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@ -128,7 +122,8 @@ HANDLE STDCALL CreateFileW (LPCWSTR lpFileName,
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/* validate & translate the flags */
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/* translate the flags that need no validation */
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if (!(dwFlagsAndAttributes & FILE_FLAG_OVERLAPPED)){
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if (!(dwFlagsAndAttributes & FILE_FLAG_OVERLAPPED))
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{
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/* yes, nonalert is correct! apc's are not delivered
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while waiting for file io to complete */
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Flags |= FILE_SYNCHRONOUS_IO_NONALERT;
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@ -165,20 +160,18 @@ HANDLE STDCALL CreateFileW (LPCWSTR lpFileName,
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else
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Flags |= FILE_NON_DIRECTORY_FILE;
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/* handle may allways be waited on and querying attributes are allways allowed */
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dwDesiredAccess |= SYNCHRONIZE|FILE_READ_ATTRIBUTES;
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/* FILE_FLAG_POSIX_SEMANTICS is handled later */
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#if 0
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/* FIXME: Win32 constants to be defined */
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if(dwFlagsAndAttributes & FILE_FLAG_OPEN_REPARSE_POINT)
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Flags |= FILE_OPEN_REPARSE_POINT;
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if(dwFlagsAndAttributes & FILE_FLAG_OPEN_NO_RECALL)
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Flags |= FILE_OPEN_NO_RECALL;
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#endif
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FileAttributes = (dwFlagsAndAttributes & (FILE_ATTRIBUTE_VALID_FLAGS & ~FILE_ATTRIBUTE_DIRECTORY));
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/* handle may allways be waited on and querying attributes are allways allowed */
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dwDesiredAccess |= SYNCHRONIZE | FILE_READ_ATTRIBUTES;
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/* FILE_FLAG_POSIX_SEMANTICS is handled later */
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/* check for console output */
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if (0 == _wcsicmp(L"CONOUT$", lpFileName))
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@ -220,14 +213,80 @@ HANDLE STDCALL CreateFileW (LPCWSTR lpFileName,
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}
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}
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if (hTemplateFile != NULL)
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{
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FILE_EA_INFORMATION EaInformation;
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for (;;)
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{
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/* try to get the size of the extended attributes, if we fail just continue
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creating the file without copying the attributes! */
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Status = NtQueryInformationFile(hTemplateFile,
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&IoStatusBlock,
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&EaInformation,
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sizeof(FILE_EA_INFORMATION),
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FileEaInformation);
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if (NT_SUCCESS(Status) && (EaInformation.EaSize != 0))
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{
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/* there's extended attributes to read, let's give it a try */
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EaBuffer = RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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EaInformation.EaSize);
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if (EaBuffer == NULL)
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{
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/* the template file handle is valid and has extended attributes,
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however we seem to lack some memory here. We should fail here! */
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return INVALID_HANDLE_VALUE;
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}
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Status = NtQueryEaFile(hTemplateFile,
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&IoStatusBlock,
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EaBuffer,
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EaInformation.EaSize,
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FALSE,
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NULL,
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0,
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NULL,
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TRUE);
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if (NT_SUCCESS(Status))
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{
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/* we successfully read the extended attributes, break the loop
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and continue */
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break;
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}
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else
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{
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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EaBuffer);
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EaBuffer = NULL;
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if (Status != STATUS_BUFFER_TOO_SMALL)
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{
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/* unless we just allocated not enough memory, break the loop
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and just continue without copying extended attributes */
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break;
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}
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}
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}
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else
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{
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/* we either failed to get the size of the extended attributes or
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they're empty, just continue as there's no need to copy
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attributes */
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break;
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}
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}
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}
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/* build the object attributes */
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InitializeObjectAttributes(
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&ObjectAttributes,
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InitializeObjectAttributes(&ObjectAttributes,
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&NtPathU,
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0,
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NULL,
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NULL
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);
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NULL);
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if (lpSecurityAttributes)
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{
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@ -246,15 +305,23 @@ HANDLE STDCALL CreateFileW (LPCWSTR lpFileName,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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dwFlagsAndAttributes,
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FileAttributes,
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dwShareMode,
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dwCreationDisposition,
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Flags,
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NULL,
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0);
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EaBuffer,
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EaLength);
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RtlFreeUnicodeString(&NtPathU);
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/* free the extended attributes buffer if allocated */
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if (EaBuffer != NULL)
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{
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RtlFreeHeap(RtlGetProcessHeap(),
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0,
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EaBuffer);
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}
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/* error */
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if (!NT_SUCCESS(Status))
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{
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